Aggregate handling apparatus



June 7, 1938. v H. 0. cuR'ns 2,119,780

AGGREGATE HANDLING APPARATUS Filed Aplfil 17, 1937 Patented June 7, 1938i p v UNITED STATES PATENT OFFICE AGGREGATE HANDLING APPARATUS Henry 0.Curtis, Des Moines, Iowa Application April 17, 1937, Serial No. 137,480

6 Claims. (01. 214-110) One object of my invention is to provide apsidemembers l5. The specified curvature of each. paratus for handlingaggregate such as sand, end member l4 enables closure of these. doorsgravel and the like for conveying such aggregate through the aggregateafter the container C'is to an aggregate mixer, such as a concretemixer, propelled into the pile of aggregate with the door 5 theapparatus beingcomparatively simple and open. 5

durable as well as inexpensive from a manufac- For propelling theaggregate container or carturing standpoint. rier C I provide a bailiii, a winch I! (see Figure A further object is to provide an aggregate3) and cables I B. The bail I8 is pivoted to the handling apparatusincluding a wheeled concarrier C as at H! soit can be reversed asilluslo tainer and doors pivoted to the open ends theretrated by solidand dotted lines in Figure 1. 10

of, which are so movable through the aggregate When the bail I6 is inthe solid line position, as to facilitate their closure after theaggregate the aggregate carrier is propelled in a left hand containerhas been filled. direction into the pile of aggregate. It will be Stilla further object is to provide a wheeled noted that the door D isopened; such opening aggregate carrier having'a reversible bail pivotedbeing automatically efiected by a jackknife tog- 15 thereto forpropelling it y means of Winch a d gle arrangement including a pivotedlever a. cable mechanism. door lever 22 and link connections 23 and 24.The

Another object is to D OV O S for the aglink connection 23 extends fromthe bail iii to gl'egate Carrier Which are Opened and 0105911 y thelever 20', while the link connection 24' ex- 20 the reversible bailduring its Operationtends from the lever 20 to the lever 22.

Still another object is to provide an inclined When the bail I5 isreversed,.the jackknife togt ack for t e aggregate Carrier S0 associatedWith gle arrangement will straighten out to the dotted a concrete mixerthat the carrier can be propelled position for closing t door M nthereby. p t track and t a position for di a n its taining the aggregatein the container 0 when 25 contents into the concrete mixer. thecontainer is propelled in a right hand direc- 2 With these and otherobjects in View, my intion. vention consists in the construction,arrangement A flexible connection 25 is provided between and combinationof the various parts of my agthe lever l6 and the door D forclosing-this door gregate handling apparatus, whereby the objectswhenever the carrier, is propelled in a left hand contemplated areattained, as hereinafter more direction and for permitting it to openwhenit fully set forth, pointed out in my claims, and is propelled in aright hand direction.

illustrated in the accompanying drawing, in The door D is normallyretained closed by. a

which: latch 26 engaging a cross rod. 27 on the door. A Figure 1 is aside elevation partly in section leaf spring. 28 serves to normallyretain the latch showing an aggregate carrier forming a part of in thelatching position. The latch is provided my aggregate handlingapparatus. with an extension 29' adapted, as willhereinafter Figure 2 isa plan View ofv the carrier. appear, to be engaged during the operationof. the Figure 3 is a diagrammatical side elevation of aggregate carrierfor unlatching the door autothe carrier and the remaining part of theappamatically.

ratus for conveying aggregate to a concrete In Figure 3 further elementsof the apparatus 40 mixer; and are illustrated. An inclined track 30 isprovided Figure 4 is a side elevation of a modified form of which may bemounted on a truck T. The trackv carrier. 30 is made of a pair ofchannel irons spaced lat- On the accompanying drawing I have used theerally and adaptable for receiving the wheels I2, reference character Cto indicate a container for and thereby guiding the carrier to. aposition 45 aggregate. The container C has a pair of side Where it candischarge into the. chute. 3| ofv a walls l0 and a bottom II, the endsof the conconcrete'mixer 32.

tainer being open. Wheels l2 are provided for The latch extension.2 9.-is. adapted to engage supporting the container'C so that it can be readaStationary projection 33' thus releasing ily propelled from one positionto another. door D after which a stationary extension 34 en- 50 The openends of the carrier C are closed by gages a lever 35 of the door D foropening the doorsD and D pivoted to the upper corners of the door so thecontents of the container C maybe carrier as at l3. Each of the doors Dand D discharged into the concrete mixer 32. comprises an arcuate endmember l4 curved on The winch and cable mechanism includes idler aradius from the pivotal axis l3, and a pair of pulleys 36, a dead manpulley 36" and a boom 31 55 carrying an idler pulley 38. The boom 31 ispivoted to the truck T and may move between stops 39 during operation.

In Figure 4 I illustrate a modified form of construction in which acontainer C is provided with an open end 40 which is constricted byinclining the forward ends of the sides of the container toward eachother. In this way the discharge end of the container C may enter theintake opening 4| of a concrete mixer32' for discharging the contentsthereinto without spilling them. This carrier is illustrated as havinga. manually operable door D" provided with a handle lever 35 and a latch42 is illustrated for latching the door D" in closed position.

Aside from these features, the carrier C is similar in construction tothe carrier C, but does not have all of its automatic advantages.

Practical operation In the operation of my device, referring to Figure3, the carrier C is being moved in a left hand direction and pulled intoa pile of aggregate 43. The door D is open, as shown by solid lines inFigure 1, so the aggregate can enter the container C, but will beretained against falling out of the forward end thereof by the door Dlatched in closed position by the latch 26.

When the container has been filled, the winch I1 is reversed forswinging the bail I6 of the carrier from the full line position to thedotted position, which first closes the door D and then propels thecarrier up the inclined track 30, as shown by dotted lines. Finally asshown by dash lines,

=' the carrier travels down the inclined portion 30 of the track 30, thelatch 26 being unlatched adjacent the end of its downward travel andthereafter the extension 34 engaging the handle lever 35 and therebyopening the door D. This permits the contents of the aggregate carrierto be discharged into the chute 3| from which the aggregate slides intothe mixer 32.

Just before reaching the height of its travel on the inclined track 30,the bail l6 will engage the pulley 38 of the boom 31 and swing the boomforwardly to the dash line position, thereby raising the forward end ofthe bail to an out-of-theway position where it does not interfere withthe concrete mixer 32. This position is illustrated in Figure 4.

After the contents of the carrier have been discharged, the winch I'! isagain reversed for reversing the bail l6 and propelling the aggregatecarrier C back for another load of aggregate.

With the construction shown in Figure 4, it is not necessary to releaseand open a door at the right hand end of the carrier.

A modification of the character shown in Figure 4, when compared withthe construction shown in Figure 1, and many others may be made withoutdeparting from the real spirit and purpose of my invention, and it is myintention to cover by my claims any modified forms of structure or useof mechanical equivalents which may be reasonably included within theirscope.

I claim as my invention:

1. In an aggregate handling apparatus, a wheeled container having openends, doors for said ends, a bail pivotally connected to said containerfor reversal relative thereto for pulling said container in eitherdirection, and an operative connection between said bail and said doorsto close one door when the bail extends in one direction and to closethe other door when the bail extends in the other direction.

2. In an aggregate handling apparatus, a wheeled container having openends, doors for said ends, said doors being pivoted to said containerand being formed on radii from the pivot axes, a bail pivotallyconnected to said container for reversal relative thereto for pullingsaid container in either direction, and an operative connection betweensaid bail and said doors to close one door when the bail extends in onedirection and to close the other door when the bail extends in the otherdirection.

3. In an aggregate handling apparatus, a wheeled container having openends, a door for one of said ends, a bail pivotally connected to thelower part of said container adjacent the center thereof and reversibleby swinging fore and aft across thetop thereof for pulling saidcontainer in either direction, and an operative connection between saidbail and said door to close the door when the bail extends in onedirection from its pivotal connection.

4. In an aggregate handling apparatus, a wheeled container having openends, a door for one of said ends, a bail pivotally connected to saidcontainer and reversible by swinging fore and aft across the top theretofor pulling said container in either direction, and a toggle leverconnection between said bail and said door to close the door when thebail extends in one direction from its pivotal connection and to openthe door when the bail extends in the other direction therefrom.

5. In an aggregate handling apparatus, a wheeled container having openends, a door for one of said ends, a track for said containerterminating adjacent the intake of an aggregate mixer and winch andcable mechanism for alternately propelling said container into a pile ofaggregate and along said track to discharge its contents into saidmixer, said container having a bail connected to the lower centerportion there of with its outer end connected with said winch and cablemechanism, such bail connection being swingable across the top of saidcontainer and thereby reversible for pulling the container in eitherdirection.

6. In an aggregate handing apparatus, a wheeled container having openends, a door for one of said ends, a track for said containerterminating adjacent the intake of an aggregate mixer and winch andcable mechanism for alternately propelling said container into a pile ofaggregate and along said track to discharge its contents into saidmixer, said container having a bail connected with said winch and cablemechanism, such bail connection being reversible for pulling thecontainer in either direction, and a boom pivoted adjacent saidaggregate mixer and adapted to be engaged by said bail and raise it to aposition where it does not interfere with the mixer as the containerassumes a position thereadjacent for discharging its contents.

HENRY O. CURTIS.

